Public Health England is responsible for quality assurance of several NHS screening programmes. This document discusses recurring incident themes and lessons learned from sickle cell and thalassemia screening, fetal anomaly screening, infectious disease screening, newborn bloodspot screening, and newborn and infant physical examination screening. Common issues included missed or delayed screening due to failure to identify cohorts, lack of follow up procedures, and errors in screening processes and IT systems. The document emphasizes using standardized incident reporting forms, communicating between departments, and learning from past issues to strengthen screening programmes.